It's commendable that the project states "anonymity is hard to get – solely using Tor doesn’t guarantee it" and "it is strongly advised not to use TorBox if your well-being depends on your anonymity". Other such solutions like to gloss over the fact that "using tor !== anonymity" and even the Tor Browser does a lot more to help with anonymity than just route your traffic through tor.
I'm still not sure where such a solution would be a good choice though. Getting access to the broader, uncensored internet is also not as easy as it seems in countries where this applies, e.g. China, as even getting an entry node that works is not easy so this is not a plug'n'play option anymore for that.